1311404444 has 36 divisors (see below), whose sum is σ = 2673082944. Its totient is φ = 561306816.

The previous prime is 1311404417. The next prime is 1311404473. The reversal of 1311404444 is 4444041131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165272 + ... + 173024.

It is an arithmetic number, because the mean of its divisors is an integer number (74252304).

Almost surely, 2^1311404444 is an apocalyptic number.

1311404444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1311404444 is an abundant number, since it is smaller than the sum of its proper divisors (1361678500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311404444 is a wasteful number, since it uses less digits than its factorization.

1311404444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8634 (or 8625 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 1311404444 is about 36213.3185996534. The cubic root of 1311404444 is about 1094.5750647135.

Adding to 1311404444 its reverse (4444041131), we get a palindrome (5755445575).

The spelling of 1311404444 in words is "one billion, three hundred eleven million, four hundred four thousand, four hundred forty-four".